Plastic box sealing structure

ABSTRACT

A plastic box sealing structure includes a plastic box body formed by bending a plastic plate, box bottom long, short side plates and box top sealing long, short plates, wherein the long side plate is configured with indented V-shaped notch on a sealing center position thereof, a bottom side of the notch is exactly positioned on a sealing center line of a bottom plate face, a sealing plate is respectively configured at two sides of the notch, left, right side plates of the opposite long side plates are formed with different symmetrical hole faces, the two opposite short side plates has opposite left, right cut edges, a plate face of the short side plate is configured with through holes corresponding to the through holes configured on the long side plate, allowing the side plates to be naturally stacked and assembles together.

(a) TECHNICAL FIELD OF THE INVENTION

The present invention relates to a plastic box sealing structure, andmore particularly to a plastic box sealing structure, allowing thebottom of a box to be pre-sealed simply and safely, and the box to befolded and stored conveniently.

(B) DESCRIPTION OF THE PRIOR ART

Due to the different packaging needs, the development and use of variouspackaging materials is extremely diverse and common. Traditionally themost common paper boxes are easy to make, and environmentally friendlyrecycling is easy, most commonly used by people. However, paper boxesare usually made of corrugated cardboard; the most troublesome thing isthat they are easy to get wet and become soft and deformed, which willcause damage and affect the safety of the whole package. In addition,paper material is made from wood pulp, causing them to beenvironmentally unfriendly and cost high, and especially have the doubtsabout packing safety, so the development of plastic packing boxes hascome into being. Especially, hollow honeycomb board plastic boxes havemulti-functionality that combines light weight and moisture-proofsafety, equivalent to the paper box structure. They are made by cuttingexpanded fixed box and then folded into a three-dimensional boxstructure. For the sake of stack to reduce volume, the appearance of abox is usually first folded and then stacked with the other boxes forstorage after nailing. The bottom of the box is then fixed with anadhesive tap or nails upon use for packing, thereby providing convenientpacking use, and the top of the box is then sealed after items arefilled in the box. But, such kind of sectionalized sealing operation ofnailing or adhesion with an adhesive tape in fact causes inconvenienceand trouble to recycling classification after use, especially nailing,because of different material between box and nails. In addition, thesealing operation of such kinds of boxes needs skilled persons with theaid of tools can then be completed. Especially, when a packaging plasticbox is larger or the item inside is heavier, the weight of the item willcause it to be suddenly popped open if a simple adhesive tap is used tobond the two plates of the box together, which affects packaging safetyseriously, and more, causes transportation danger. In addition, theadhesive tape for bonding will always contaminate box plates such thatit will cause trouble and inconvenience to the processing of recyclingor repackaging. Therefore, there is supersonic wave for contact bonding,but it will cause the appearance of contacts to be indented or meltingunevenness, which is not easy to control bonding quality but isdifficult to make the appearance smooth and eye-appealing.

SUMMARY OF THE INVENTION

To develop a plastic packaging box capable of maintaining safe,lightweight and practical characteristics, and being environmentallyfriendly, simply stackable, foldable and sealable, the present inventionis proposed.

The main object of the present invention is to provide a plastic boxsealing structure, using the two sides of a box bottom to be configuredwith symmetrical and different cut plates, and respectively configuredwith through holes on stacked relative edges of adjacent plates,allowing the locking of plastic assembly nails, and allowing the sealedbottom plates to be pressed to one side to form a sheet-like body forconvenient storage.

To achieve the object mentioned above, the present invention proposes aplastic box sealing structure, including a plastic box body formed bybending a plastic plate, box bottom long, short side plates and box topsealing long, short plates, wherein the long side plate is configuredwith indented V-shaped notch on a sealing center position thereof, abottom side of the notch is exactly positioned on a sealing center lineof a bottom plate face, a sealing plate is respectively configured attwo sides of the notch, left, right side plates of the opposite longside plates are formed with different symmetrical hole faces, the twoopposite short side plates has opposite left, right cut edges, a plateface of the short side plate is configured with through holescorresponding to the through holes configured on the long side plate,allowing the side plates to be naturally stacked and assembles togetherafter the side plates are stacked, bended in and placed flat in sequenceupon box sealing operation; the plastic assembly nails are passedthrough the through holes of stacked long, short side plates to anotherside thereof and locked by fixing rings, completing safe box bottomsealing; the box body is pressed to one side to stack to form asheet-like stacked body after the assembled box bottom plates is pressedinto an inside of the box body through stacking, sealing and nailing ofthe bottom plates; upon packaging, the stacked bottom plates are placedflat, the box body is then automatically sealed for safe packaging use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a plastic box bottom structure of thepresent invention;

FIG. 2 shows stacking and sealing structures of plastic box bottomplates according to the present invention;

FIG. 3 is a partly cross-sectional view of the bottom plates of thepresent invention to be sealed upon a nailing operation;

FIG. 4 is a perspective view of the box bottom of the present inventionafter sealing;

FIG. 5 is a perspective view of a box body of the present invention uponpackaging; and

FIG. 6 is a perspective view of the box body of the present invention ina storage state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

A plastic packaging box of the present invention is approximately thesame as conventional ones in appearance. Referring to FIGS. 1 to 6, abox body 10 of the present invention, in a preferred embodiment, is arectangular one, each long side and each short side of which arerespectively configured with a long side plate 11 and short side plate12 having different shape adapted to seal the box body 10, where thecenter of the long side plate 11 is configured with an approximatelyV-shaped notch having a flat bottom, the bottom of which is usuallyexactly positioned on the center sealing line of the bottom plates afterthe bottom of the box body 10 is sealed; at the two sides of the notchare respectively with a different sealing plate face, where one of thetwo side sealing plates is configured with a plurality of through holes13 for assembly nailing and another side sealing plate is configuredwith an enlarged hole 14 corresponding to the position where the throughholes 13 are stacked together. The left and right plate faces of twoopposite long side plates 11 of the box body 10 are formed intodifferent symmetrical hole faces to match adjacent short side plate s 12at the two sides. According to the stacking assembly requirement, thesame symmetrical left and right chamfered edges are configured, and thestacked plate surface on another side of the short side plate 12 isconfigured with through holes 13 corresponding to the through holes 13on the long side plate 11. Upon box sealing, the stacked bottom platesare placed on a preset box sealing assistive device, plastic assemblynails 20 are inserted in the preset holes of the device, allowing thebox assembly nailing to be convenient without needing specialtechnology, where the center of the nail 20 is configured with anopening groove 21, allowing the top rod section of the nail to be forminto a split hollow rod, convenient for the extended top edge to be usedfor micro expansion clamp operation. Furthermore, the bottom side of thenail 20 has an end sheet 22 of a large width and proper thickness havingthe rigidity of fastening and positioning after locking, ensuring thelocking safety and stability of the box sealing. Furthermore, the end ofthe nail rod is extended with a larger convex ring 23, and the top edgeof the outer end of the convex ring 23 is configured with a barb-likeguide slope downward sloped from outside, allowing a fixing ring 24 forbuckling to be easily pushed to into the inner end edge of the convexring 23 to buckle it; the distance between the convex ring 23 and bottomend sheet 22 is slightly larger than the thickness of the two stackedplates, allowing the nail to be easily passed through the through holes13 to above the stacked plates due to the deformation of the openinggroove 21. Thereafter the outer top end of the rod is buckle by thefixing ring 24. Upon the box bottom sealing operation, the stakedthrough holes 13, 131 are aligned with the nail 20 and the nail 20 isinserted into them from above, allowing the nail to be passed throughthe stacked plates to above it; thereafter, the fixing ring 24 is usedto buckle it, allowing the two stacked plated to be pressed together,thereby fixing them together and the box bottom to be sealed safely,thereby achieving a safe item packaging. The box bottom is spreadoutward and placed flat and the box body can then be easily sealedthrough the symmetrical beveled cutting of the opposite long, shortplates after all the bottom plates are stacked and locked together toseal the box bottom. Upon the storage, it is only needed to push thebottom plates into to the inside of the box, and the box body can thenbe simply folded toward one side to store as a staked plate, therebyallowing it to be collect to the smallest-volume body after the bottomthe bag body is sealed as FIG. 6 shows.

Upon packaging, the bottom plates are only needed to spread outward andplaced flat after the box body is opened to a three-dimensional body,and the box bottom can then be sealed and assembled, allowing thepackaging to be safe and convenient. Referring to FIG. 5, thecorresponding positions of long, short plates 15, 16 of the box top maybe stuck with male, female Velcro tapes, allowing the two short plates16 and two long plates 17 to be automatically stuck and assembledtogether after the two short plates 16 and two long plates 17 are foldedafter the packaging is completed, allowing the box to be simply covered.Especially, the storage and recycling of the box after use isconvenient, reducing effectively the packaging cost.

The present invention has the following advantages over the prior arts:with the moisture-proof and collision-resistant features of plasticboxes, the present invention can have a stable sealing structure byfolding and assembling the specially cut bottom plates and using plasticassembly nails 20 and fixing ring 24 to be passed through them to buckleand fix them simply, allowing the stacked bottom plates to be accuratelystably fixed for sealing, ensuring the packaging use of the plastic boxis safe. In addition, the bottom of the assembled box is completewithout processing or sticking, making the appearance neat andeye-catching. Especially, with the box top being pre-configured withmale, female Velcro tapes 17, 18 to simplifying the sticking design,ensuring the appearance is complete and the transportation is convenientafter the packaging box is sealed. In addition,

With the opposite symmetrically cut bottom plates, the bottom plates canbe easily pushed inward from outside the vacant box can then be pressedto one side to make plates stacked together, allowing the volume of thebox body to reduce to the smallest body. When the box is used forpackaging again, the box body is only needed to stand up and the bottomthereof is push outward to a flat position, and the sealing structure ofthe box bottom can then be completed to be convenient for nextpackaging. Therefore, the present invention can be stored simply, safefor packaging use, environmentally friendly, and eye-appealing inappearance.

I claim:
 1. A plastic box sealing structure, comprising a plastic boxbody formed by bending a plastic plate, box bottom long, short sideplates and box top sealing long, short plates, wherein said long sideplate is configured with indented V-shaped notch on a sealing centerposition thereof, a bottom side of said notch is exactly positioned on asealing center line of a bottom plate face, a sealing plate isrespectively configured at two sides of said notch, left, right sideplates of said opposite long side plates are formed with differentsymmetrical hole faces, said two opposite short side plates has oppositeleft, right cut edges, a plate face of said short side plate isconfigured with through holes corresponding to said through holesconfigured on said long side plate, allowing said side plates to benaturally stacked and assembles together after said side plates arestacked, bended in and placed flat in sequence upon box sealingoperation; said plastic assembly nails are passed through said throughholes of stacked long, short side plates to another side thereof andlocked by fixing rings, completing safe box bottom sealing; said boxbody is pressed to one side to stack to form a sheet-like stacked bodyafter said assembled box bottom plates is pressed into an inside of saidbox body through stacking, sealing and nailing of said bottom plates;upon packaging, said stacked bottom plates are placed flat, said boxbody is then automatically sealed for safe packaging use.
 2. Thestructure according to claim 1, wherein one side of said long side plateis configured with through holes for nailing, another side thereoflarger enlarged holes corresponding to nailing positions.
 3. Thestructure according to claim 1, wherein a center of a top section of arod of said assembly nail is configured with an opening groove to form ahollow rod, a bottom thereof a wider end sheet, an end of said nail isformed into a larger convex ring configured with a guide slope downwardsloped from outside, allowing said fixing ring to be convenientlybuckled and locked.
 4. The structure according to claim 1, wherein male,female Velcro tapes are stuck on relative positions of said adjacentlong, short plates of a box top stacked together, allowing said box bodyto be covered and sealed at the same time.